The bright plumage of many male birds has evolved to attract females.很多雄鸟进化出鲜艳的羽毛是为了吸引雌鸟。Its body plumage suddenly began to ruffle and swell.它全身的羽毛突然竖了起来，胀得鼓鼓的。The birds were in immature plumage.这些鸟儿羽翅未全。...
Abiotic environment The nonliving factors of the environment that influence ecological systems.影响生态系统的非生物环境因子.Drought - stress, salt - stress, cold - stress strongly influence on plants among all abiotic stresses.在各种非生物胁...
人一旦死了, 即不能复生.Once someone has died, he cannot be brought back to life.横竖他死了, 我们不能使他复生.Anyway he was dead, we couldn't bring him back to life.春雨使大地复生.The spring rains quickened the earth....
Moistened flakes are heated to inactivate the antinutritional factors.湿润的薄片需加热,以钝化抗营养的因素.They discovered how to inactivate knock out, single genes in laboratory animals.他们发现如何使实验用动物体内个体特定基因不活跃、失去作用.They quickly inactivat...
Then the sound of rumbling thunder reached the watchers on the shore, as cargo, ballast, ammunition and 400 people went sliding and crashing down to the port side of the steeply listing ship.后来当船上的货物 、 压舱物 、 弹药以及400个人轰的一...
Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos.许多林木树种都有颈卵器, 受精以后便产生许多原胚.She latched on to his arm, hooking her other arm around a tree.她拽住他的胳膊不放，另一只胳膊抱紧一棵树。The...